If Bayern Munich in the Allianz Arena is regarded as the ultimate test, then by humbling their illustrious opponents, Liverpool would seem to have passed it with flying colours.

With Jurgen Klopp though, his marks make very different reading. Any assessment of his team's performance here in Germany would be underlined in red ink and followed by the words: "could do better".

He knows the 3-0 victory, even in a friendly, will have raised a few eyebrows, if only for obvious pace and power the Reds displayed, in direct contrast to a Bayern side who appeared lethargic and slow.

Yet the time, he said afterwards, is not yet right to start blowing the bugles and make predictions about Liverpool's threat this season. Instead, he believes there is far more to come from his side.

"It is not that I am trying to make the league afraid, ‘oh my god Liverpool beat Bayern 3-0 and they can do better.’ We have to do better and that is what we are working on," he explained.

Klopp spoke after the win (Image: Liverpool FC)

Klopp laughs during his side's Audi Cup game with Bayern (Image: Jan Hetfleisch)

"I have to speak to things that are not good because I see it. You know that I am not like this.

"We won 3-0 but I don’t like running around saying, ‘how good was this?’ because it wasn't. in a few parts of course it was good, in a few other parts everyone saw that Bayern had the ball too often and it was too easy to play through our lines.

"I cannot ignore this on a day like today. "

It is the headmaster's usual refrain - standards must improve. For Liverpool, there were some obvious things to work on in Munich, such as midfield control and pace of passing, but there were strong signs too.

In Sadio Mane and Mohamed Salah, Liverpool now have two lightening quick wide players who have an instinct for goal, who know where to run to pose a threat, and are prepared to get into the far post.

But it is with this exciting duo that Klopp is most keen to show restraint. He knows pre-season friendlies, when sides are less concerned about smothering, and more intent on attack, are good for Liverpool.

The Reds boss is keeping his feet firmly on the ground (Image: Liverpool FC/Getty)

Their problem will come on the opening day when Watford sit back with 10 behind the ball. And that is why Klopp didn't want to shower praise on the two goalscorers.

"Yes of course they are both good but they don’t need to know it all the time when they play together…'oh my god with Phil Coutinho behind as well to play all the passes for them to run in behind' It is not that easy," he said.

"Football is not that easy so I don’t want to talk about this. Yes it looks good but they need to get fit and stay fit and hard and resistant because the season will be difficult. That is what we are preparing.

"You saw that Sadio is not where he can be so he needs playing time, playing time, playing time.

"The beginning of the second half showed that in a game like this, ok the result was good h-t 2-0, against an opponent like Bayern we can be dominant with the ball.

"Then we should do it and not wait until the second half or whatever. At first we came late (pressing) and then like 20-minutes too late and that was the problem. We scored in between which was nice but we can do much better."